问题描述:
excuse me,do you know miss black's telephone number?sorry,i don't know.
she ( )it since yesterday.
a.has changed
b.have changed
为什么?she 不是应该选a的吗
she ( )it since yesterday.
a.has changed
b.have changed
为什么?she 不是应该选a的吗
问题解答:
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